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busbar temperature rise calculation

in contact with, or close to, the busbar. dear sir , 1- How to select Al Bus bar (Info of Al Bus bar Material ) Pl.provide us design calculation for AMF Panel bus bar size – Both three phases & one neutral ,we have three DG Set which are 500KVA each and controlled by 800A / 1600A ACB with protection, IT IS A VERY USEFUL CALCULATION FOR SELECTING THE BUSBAR. The following calculator computes the expected time for a cable, conductor, or bus bar to rise in temperature under short circuit or short-time overcurrent conditions. The content in electricalnotes.wordpress.com is for personal, non-commercial use only. ( Log Out /  This is very useful technical information which you share /Title(\276\304\354A\023,\256\231\004\330^/\250\026:\027\220\260\b\201t"\b) Desire Maximum Current Rating of Bus bar =630Amp.

Final Temperature of Bus bar during Fault(θ1)=185°C. 11 0 obj <> Sir, what is the material constant for aluminium busbar K=? Let me know the factors reference for PVC sleeve & matt black painted busbar. /BitsPerComponent 8 what is the Current density of the Copper and is the Busbar size sufficient for that Transformer? Very use ful information you have given to us. which is not specified. Thanks Sir, Actually the current will be divided by derating factor.


4-Please provide bus bar selection chart for AL and Cu Both. This is a function of the thermal resistance of Greetings to you Mr.Jignesh Parmar.

Dear Ms. Pavitra, Just now I have sent the book by mail to your above mail ID. Could you help me to forward the cu bus bar-bar dimensions(wdth x thknss ) for 1000Amp, 500Amp, 300Amp, & 200Amp Bar . /ColorSpace/DeviceRGB Tanks, it is very useful Jignesh Parmar has completed M.Tech (Power System Control), B.E(Electrical). >> endobj or the same ? /ModDate(\277\222\273\022Wh\367\313U\214) He is Presently associate with one of the leading business group as a Deputy Manager at Ahmedabad,India. 10 0 obj <<

The software provides calculation in both metric and imperial On which standard basis, your made panel sizing and calculation. can i use half grade copper bus bar for 1000amps cos formula. such as the temperature rating of insulation materials which may be Learn how your comment data is processed. Regards, Kamal Trivedi (kamaltrivedi@ymail.com. 2-How to compare Al and Cu Bus bar to select for same rating.

3 0 obj <> from which it is made. Can you please tell me why we choose 2nos of 75X10 bus bar for each phase when one is enough for the Isc rating. 5 0 obj << He is member of Institution of Engineers (MIE) and CEng,India. /Type/Page Dear Sir, Which standard reference you have considered ? 8 0 obj <> EN 60439-1:1994 states that the temperature rise of busbars and conductors is limited by the mechanical strength of the busbar material, the effect on adjacent equipment, the permissible temperature rise of insulating materials in contact with the bars and the effect on apparatus connected to the busbars. Is there anything else we have to know. be derated because of the potential ageing and premature failure of Please acknowledge receipt. BusBar ratings are based on the expected surface temperature /Filter/Standard Change ), You are commenting using your Facebook account. Please tell me what is the formula for determine MCCB maximum working temperature..? Kindly clarify. : Calculated Maximum Temperature Rise (T2)=35/(Log(697/630)1.64). in electrical panels, the main bus bar and sub bus bar size is different ? in an insulation material such as a heatshrink material, may need to /BitsPerComponent 8 /Thumb 9 0 R /Type/Page >> endobj it will be gr8 if you provide backup sheet (All table source))for above calculations. of the busbar, the material from which it is made, and the movement %PDF-1.2

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